# Blog

**2018-12-08**

## Christmas card 2018

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### Comments

Comments in green were written by me. Comments in blue were not written by me.

Great puzzle problems! Hint on #9: try starting with an analogous problem using smaller numbers (e.g.

*3a + 10b*). This helped me to see what I had to do more generally.Noah

Loved these puzzles! I have no idea how to approach #9, though. Will the solutions be posted at any point? Or, can anyone provide a hint to how to approach it?

Seth

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2018-12-17